From 03c9d4edc4e321db8c1b70ae621f77fa89664dfc Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Tue, 4 Feb 2020 18:02:39 +0800
Subject: Add get timeline list feature.

---
 Timeline/Services/TimelineService.cs | 48 ++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

(limited to 'Timeline/Services/TimelineService.cs')

diff --git a/Timeline/Services/TimelineService.cs b/Timeline/Services/TimelineService.cs
index 6f9d437e..67a57deb 100644
--- a/Timeline/Services/TimelineService.cs
+++ b/Timeline/Services/TimelineService.cs
@@ -228,6 +228,16 @@ namespace Timeline.Services
     /// </summary>
     public interface ITimelineService : IBaseTimelineService
     {
+        /// <summary>
+        /// Get all timelines including personal timelines.
+        /// </summary>
+        /// <param name="relatedUserId">Filter timelines related (own or is a member) to specific user.</param>
+        /// <returns>The list of timelines.</returns>
+        /// <remarks>
+        /// If user with related user id does not exist, empty list will be returned.
+        /// </remarks>
+        Task<List<TimelineInfo>> GetTimelines(long? relatedUserId = null);
+
         /// <summary>
         /// Create a timeline.
         /// </summary>
@@ -618,6 +628,44 @@ namespace Timeline.Services
             }
         }
 
+        public async Task<List<TimelineInfo>> GetTimelines(long? relatedUserId = null)
+        {
+            List<TimelineEntity> entities;
+
+            if (relatedUserId == null)
+            {
+                entities = await Database.Timelines.Include(t => t.Members).ToListAsync();
+            }
+            else
+            {
+                var timelineAsMemberIds = await Database.TimelineMembers.Where(m => m.UserId == relatedUserId).Select(m => m.TimelineId).ToListAsync();
+                entities = await Database.Timelines.Where(t => t.OwnerId == relatedUserId || timelineAsMemberIds.Contains(t.Id)).Include(t => t.Members).ToListAsync();
+            }
+
+            var result = new List<TimelineInfo>();
+
+            foreach (var entity in entities)
+            {
+                var timeline = new TimelineInfo
+                {
+                    Name = entity.Name,
+                    Description = entity.Description ?? "",
+                    Owner = Mapper.Map<UserInfo>(await UserService.GetUserById(entity.OwnerId)),
+                    Visibility = entity.Visibility,
+                    Members = new List<UserInfo>()
+                };
+
+                foreach (var m in entity.Members)
+                {
+                    timeline.Members.Add(Mapper.Map<UserInfo>(await UserService.GetUserById(m.UserId)));
+                }
+
+                result.Add(timeline);
+            }
+
+            return result;
+        }
+
         public async Task<TimelineInfo> CreateTimeline(string name, long owner)
         {
             if (name == null)
-- 
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